Process of producing fertilizer material.



PRocEss oF Pnonuclm FEmsL'izEn MATERIAM APPLICATION HLED NOV. Hh` wwewww Pmnm my 3, m71

.inv sas 'Para risica.

IIILI'JIAIVI.` W. IHUGHEY, O GARDEN CITY, NEW YORK, ASSIG-NOR TO'BY-PRODUCTS RECLAIMIN G CORPORATION OF NEW-YORK, 1 Y., A CORPORATION OFNEW YORK.

Leashes.;

To allwwm 'it may concern: i Beit known that I, WILLIAM W.

. a citizen of the United States, and a resident of Garden City, countyof Nassau and State of -New York, have invented certain new and usefulImprovements in Processes of Producing Fertilizer Material, of which thefollowing is a specification, reference being had to the accompanyingdrawing, forming a part thereof.

My invention relates to fertilizers or coinv 1' 94%: water, aithougiithis liquid as deiiverea j as 60%.

from some distilleries, may contain as low The solid matter is held insolution and comprises from 8 to 12% potassium coinpounds, such ascarbonate of potassium, chlorid of vpotassium and sulfate of potassiumand a considerable quantity ovf-albuminoids and proteins which are richinnitrogen.. v

If the material is heated to high temperatures, it is found that theresulting 4solid contains no appreciable quantity of nitrogen andwhileit contains potassium compounds and is of some value forfertilizer, the nitrogen which is also valuable, is lost.

One object (if my invention-is to provide a process of-treatingdistillery slops" by which a fertilizer material or fertilizer baselmaybe produced which shall retain substantially the full percentageofnitrogen and which at the -same time shall be substantiallynon-hydroscopic.

In order that my invention may be thoroughly understood, I will nowproceed to describe the same in the following specification, and thenpoint out 'the novel features thereof in appended claims.

Referring to the drawings, the single lig- Iure is a diagrammatic viewshowing suitable apparatus for practising the process of my. invention.A

In carrying out the process of my invention any suitable apparatus maybe emi Specification. of Letters Patent.

HAUGHEY,

` y Pnocnss or PiioDUoIivG FERTILI'ZER MATERIAL.

Patenten .iuiy a, iai'r.

Application led November 11, 1916. Serial No. 130,716.

ployed, the drawings being illustrative of u one such apparatus. A

10 designates an evaporator of any well known typecomprising, forexample, a tank or chest 11 within which is a steam coil 12, thedistillery slops or like material to be 4treated being supplied througha pipe18 and discharged in the form of a concentrated liquid, throughpipe 14 in-which is a control valve 15. The outlet pipe4 dis-A chargesinto a' funnel 16 lwhich in turn delivers the concentrated liquid whichcontains approximately 40% water and has the consistency of thin syrup,to a pair of stick rolls 17. These -rolls are driven in a well knownmanner and are heated at a temperature of about 300o F. by steam or someother suitable means so that the liquid is dried out rapidly, forming asolid coating which adheres to the drum and which is removed by Scrapers19.

As the dry solid matter falls from' thel rolls, it is delivered to adrying furnace where it is heated at a predetermined criticaltemperature suflicient to render it nonhydroscopic by driving olfcertain ingredients including a small percentage of glycerin, withoutdissipating the nitrogen;

20 designates the fire box of a furnace 4` having a smoke or air box 21andan interposed' rotary drum 22. The drum is provided internally withlongitudinal 'ribs which may have a spiral curvaturev to assist incarrying the material forward. The

-drum is inclined downwardly to a slight extent from the fire box andhas a hopper 23 into which the aforesaid dry solidmatter is delivered.'It may be conveniently carried from the stick rolls to the hopper by abelt conveyer 24 or some other suitable means.

The drum 22 is rotatively mounted on rollers 25 and is driven by-a shaft26 so that it is slowly but continuously revolving. The hotpgases fromthe furnace pass through the drum and impart heat to the solid niaterialas it gradually advances throughthe drum. The gases escape into the airbox 21 and outward through the flue 27. The teinperature of the gases isregulated by adjusting the air opening 28 in the box 21 or by regulatingthe fire Aor the burners if an oil or gas furnace is utilized, so thatthe gases do not exceed a predetermined critical temperature.

The solidl matter-as it is delivered from -the stick rolls -is arelatively dry, brittle material but it is Very hydroscopic and soon hasthe consistency of a very thick liquidl or soft gum iexposed totheatmosphere. However, after itis passed slowly through the lrotarybakingdrum 2.2 it becomesl sub-l stantially. non-hydroscopic and iscapable of being' finely divided so that it is Wel 1`adapt ed for yuseas a commercial fertilizer ma" 'teriaL The .'criticall temperature for'this 'material is` approximately700` F- and if the temperaturel ofthefurnace isinsuiicient the lmateriall Will adhere tothe in.

terior ofthe drum. On the' other hand, if

the temperature ofthe furnace is too' great,

' the nitrogenvvillI be entirely drivenoff and the value oftheyresultant dry material will he much less; l

' Vhat'Ivclaim isz. -1 4 ,v. 1. The process .of treating distilleryslops for theproduction of'fertilizer material that y Variations may beeffected within the'spirit and scope offmyxinfention, land I intend thatonly such limitationslbe imposed as' are `indicated in the appendedclaims.

consists in partially evaporating the Water to produce a relativelyconcentrated solution,l drying out- Vthe remainder of the-Water,

and finally roasting the dry product at a l.critical temperaturesufficient to render the `material, non-hydroscopic Without driving olfthe nitrogen as herein described; V

' -2. The process of treating distillery slops for the production offertilizer material that consists in partially evaporating the Water toproduce a relatively concentrated solutlon, drying but the remainder ofthe Water 1 at a temperature of about 3000 E., 4and finally roasting the-dry product at approxi# mum temperaturev to' produce anon-hydroscopicvmaterial without driving off the ni- -tro en.,A l nWitness ,whereof5 I have hereunto setmy hand this 10 day of November,1916.

WILLIAM W. HAUGHEY.

